Self-cleaning rake



Oct. 9, 1928.

W. S. WILLIAMSON SELF CLEANING RAKE Filed Aug. 17, 1925 WM mam.

H1 Z 21 5T 6 ALL; A TTORNE y Patented Oct 9,1928. j

UNITED STATES ,PATENT- OFF-ICE.

WARDS. WILLIAMSON, OF ROCK FALLS, ILLINOIS.

SELF-CLEANING BAKE. 7

Application filed August 17, 1925. Serial No. 50,694.

My invention relates to self-cleaning rakes, of that class wherein an accumulation of leaves or other rubbish on the teeth of the 10 of inclination of the teeth with reference to the ground.

Another purpose of the invention is the provision of means for locking the rake head in a fixed position, to facilitate the use thereof in some operations, such as leveling new ground, breaking clods of earth, and the like The device is simple and efiicient, and can be adapted to rakes already in use atvery little added cost.

In the drawings;

Fig. 1 is a plan view of a rake head in which the invention is embodied.

Fig. 2 isa cross-section on the broken line 2-2 of Fig. 1, with the teeth of the rake held in an operative position.

Fig. 3 is a similar view, with the teeth out of operative position.

The reference number 1 indicates the head of a rake, and 2 a plurality of teeth of usual double wire formation. 3 is a fragmentary part of a rakehandle, fixed in a'soeket 4,.

provided with forked arms 5, on the ends of which are spaced jaws 6 and 7, between which the head 1 is rockingly held. The outer ends of said jaws are united .by bolts 8, which prevent the release of the head 1-,

but permit the removal thereof to permit replacement of the teeth or other repairs.

The head 1 is formed into a flange .9,whicb limits the rocking movement of the head by a contact with a shoulder 10 in the jaw 7 in one direction, and by a contact with the jaw 6 in theother direction. This resuits in a change in the position of the teeth from an upright position when the rake is being drawn forwardly, as shown in Fig. 1. to an inclined position upon the rake being moved rearwardly over the ground, as in Fig. 3. Inthis latter position the friction between the earth and lower ends of the teeth serves to clean such teeth from rubbish which has been collected thereon.

The jaws 6 are shown provided with set- I 7 screws 11, at points just above the fian e 9, by means .of which set-screws the movement of'the flange can be regulated, to decrease or increase the movement of such flange. Said set-screws can be turned clownwardly to a point to hold the flange in contact with the shoulders 10, so as to hold the head 1 and teeth 2 rigidly in position.

It will be obvious that it is not essential that the rake-head shall be of hollow formation, and that the flanged portion may be limited to those parts of the head Which operate in the handle forks. Other changes can be made in the form and arrangement of the parts of the invention without departing from the spirit of the invention.

\Vhat I claim, and desire to secure by Letters Patent, is;

A device ofthe class described, comprising a handle, a frame on one end thereof provided with spaced jaws rigidly unitedone of which. is fitted with a stop and the other witha set-screw adapted for operation in opposition to said'stop, and a rake-head rockingly mounted in said jaws, and provided with a plurality of teeth and also pro vided with a projection positioned between saidstop and set-screw and subject to regulation thereby.

In testimony whereof I aflix my signature.

WARD s. WILLIAMSON, 

